Rubicon Technology, Inc.
RBCNDelisted Dec 23, 2022- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0001410172
Rubicon Technology, Inc. was delisted on Dec 23, 2022; its insiders filed their last Form 4 on Feb 24, 2023; 20 institutions reported holding it in 13F filings for Q3 2022, worth $867.3K in total; no superinvestor held it.
13F holders, Q4 2022
Institutional positions in Rubicon Technology, Inc. as of Dec 31, 2022. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
RBCN is no longer listed, and 13F filings after Q3 2022 list far fewer holders. See Q3 2022
- Institutional holders
- 4
- −16 vs. Q3 2022
- Shares held
- 150.9K
- −254.1K (−62.7%) vs. Q3 2022
- Total value
- $256.5K
- −$610.8K (−70.4%) vs. Q3 2022
- New holders
- 1
- 1 more added
- Sold out
- 17
- 0 more reduced
Compare with Q3 2022: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting RBCN on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 0 | $0 |
| Q1 2026 | 0 | $0 |
| Q4 2025 | 0 | $0 |
| Q3 2025 | 0 | $0 |
| Q2 2025 | 0 | $0 |
| Q1 2025 | 0 | $0 |
| Q4 2024 | 0 | $0 |
| Q3 2024 | 0 | $0 |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 1 | $126 |
| Q4 2023 | 1 | $117 |
| Q3 2023 | 1 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 4 | $256.5K |
| Q3 2022 | 20 | $867.3K |
| Q2 2022 | 18 | $4.62M |
| Q1 2022 | 17 | $4.81M |
| Q4 2021 | 20 | $4.78M |
| Q3 2021 | 18 | $5.58M |
| Q2 2021 | 20 | $5.52M |
| Q1 2021 | 21 | $6.45M |
Institutions, Q4 2022
Shares, value and share of portfolio for each institution holding Rubicon Technology, Inc.; share changes are against Q3 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Bandera Partners LLC | 128,323 | $223.3K | 0.11% | 00.0% | Unchanged |
| JBF Capital, Inc. | 16,478 | $23.2K | 0.01% | +16,478 | New |
| Tower Research Capital LLC (TRC) | 5,863 | $10.0K | 0.00% | +626+12.0% | Added |
| Rockefeller Capital Management L.P. | 220 | $0 | 0.00% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −90,671−100.0% | Sold out |
| CSS LLC | 0 | $0 | 0.00% | −46,654−100.0% | Sold out |
| Ameriprise Financial Inc | 0 | $0 | 0.00% | −35,339−100.0% | Sold out |
| Ellsworth Advisors, LLC | 0 | $0 | 0.00% | −25,127−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −21,412−100.0% | Sold out |
| BlackRock Inc. | 0 | $0 | 0.00% | −20,137−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −10,529−100.0% | Sold out |
| Geode Capital Management, LLC | 0 | $0 | 0.00% | −10,419−100.0% | Sold out |
| Advisor Group Holdings, Inc. | 0 | $0 | 0.00% | −6,979−100.0% | Sold out |
| Morgan Stanley | 0 | $0 | 0.00% | −3,147−100.0% | Sold out |
| AlphaMark Advisors, LLC | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| Leonteq Securities AG | 0 | $0 | 0.00% | −147−100.0% | Sold out |
| Wells Fargo & Company | 0 | $0 | 0.00% | −11−100.0% | Sold out |
| Credit Suisse AG | 0 | $0 | 0.00% | −26−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −82−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −57−100.0% | Sold out |